Life aboard the Trump campaign plane was an unforgettable and bizarre experience, featuring scenes like press secretary Hope Hicks steaming the candidate’s pants while he was wearing them, a new book says.

The authors said they “both had moments when they wanted to parachute off Trump Force One,’’ according to the Post.

Trump liked music — very loud music. People “couldn’t hear themselves think’’ as Elton John blared from speakers.

Trump also loved McDonalds, with one dinner featuring “two Big Macs, two Filet-O-Fish, and a chocolate malted.”

Lewandowski said a campaign staffer named Sam Nunberg was punished by being left behind at one of the fast-food restaurants. His offense: ordering a burger that was taking too long to prepare.

“Leave him,’’ Trump ordered. And they did.

Trump didn’t require a trained chef. “On Trump Force One there were four major food groups: McDonald’s, Kentucky Fried Chicken, pizza and diet coke,’’ according to the book.

One of the jobs assigned to Hicks, who is now Trump’s communications director, was to make certain his suits were pressed.

“‘Get the machine!’ ” Trump would yell, according to the book.

“And Hope would take out the steamer and start steaming Mr. Trump’s suit, while he was wearing it. She’d steam the jacket first and then sit in a chair in front of him and steam his pants.”

The authors recount an incident where Trump was in a helicopter when he learned that former campaign boss Paul Manafort said Trump “shouldn’t be on television anymore,” and that Manafort should replace him on TV.

Trump was angrier than Lew­andowski had ever seen him, the book says. He ordered the pilot to fly at a lower altitude so he could make a call.

“I’ll go on TV anytime I goddamn f–king want to and you won’t say another f–king word about me. Tone it down? I wanna turn it up,’’ he thundered. “You’re a political pro? Let me tell you something. I’m a pro at life. I’ve been around a time or two. I know guys like you, with your hair and skin…”

Lewandowski said it was “one of the greatest takedowns in the history of the world.’’